KR0162163B1 - Electronic hand book with key-input device and hand-written character - Google Patents

Abstract

The present invention relates to an information input device and a portable electronic organizer using the same, wherein an M * N size key input area is arranged in a matrix of P * Q, N * Q Y-line upper electrodes, and M * P. Two-dimensional coordinate input unit having lower X-line electrodes and contacting corresponding X and Y electrodes due to pressure applied to a specific portion of the key input unit on the back of the key input unit and the N * Q upper Y lines A scan address signal is applied to the electrodes to input key data signals outputted from the M * P X-line lower electrodes, and in the key input mode, at least one of the M * N electrodes located below the key input area is selected. When touched, the same key input is recognized, and in handwritten character and figure input mode, the contact position of each of the N * Q Y-line upper electrodes and the M * P X-line lower electrodes is recognized as two-dimensional coordinate input. A system control unit is provided.

Therefore, the present invention can use both a handwritten character and a graphic input and a key input, so that the input unit can be miniaturized and the cost town can be obtained.

Description

Handwriting / Keyboard Device Combined with Handwriting Character and Figure

1 is a block diagram of an information input apparatus according to a preferred embodiment of the present invention.

Figure 2 is an exploded perspective view of a tablet of the information input device of a preferred embodiment of the present invention.

FIG. 3 is a cross-sectional view taken along the line III-III 'of the upper base sheet and the lower base sheet of FIG.

4 is an external perspective view of the electronic organizer to which the information input device of the present invention is applied.

5 is a flowchart illustrating a kisscan interrupt routine according to the present invention.

6 is a flowchart showing a pen input processing routine according to the present invention.

7 and 8 show examples of handwritten characters, figures input and key input respectively of the information input apparatus according to the present invention.

9A and 9B are schematic diagrams of a dedicated key input area and a dedicated write input area of an information input apparatus according to another embodiment of the present invention.

* Explanation of symbols for main parts of the drawings

100: key input unit 120: peripheral key input area

210,220: upper electrode 230,240: lower electrode

400: liquid crystal display unit 600: pen

700: function key 720: information key

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an information input device and a portable electronic organizer using the same, and more particularly, to an information input apparatus capable of miniaturizing and cost down an input device of a small electronic apparatus such as a portable electronic organizer and a portable electronic organizer using the same.

In general, a key input device such as a keyboard or a key matrix is used as the information input device. However, since the key input device inputs information by pressing a plurality of keys by the user, the input speed is slow and it takes a considerable time to learn the key board. In addition, the character button on the keyboard should be more than a certain size so that the user can accurately and easily input by touching the finger, there is a problem in miniaturizing the size of the input device itself can not be formed below a certain size. In addition, in order to input more diverse information, the number of key buttons should be increased or a mode switching mode should be adopted. Increasing the number of key buttons has a problem of increasing the size of the input device, and also has a mode switching mode. Usage was a burden that the user should be familiar with the various key modes.

Another information input device is a two-dimensional coordinate (X-Y) input device.

The coordinate input device is a device that recognizes the contact position when the sensor pen contacts the tablet, and includes a photosensitive, electrostatic, piezoelectric, and surface acoustic wave method depending on the method. Such a two-dimensional coordinate input device calculates the contact position value by calculating the resistance value between the contact position and the four reference positions. It is easy to input characters or figures and to use icons, but a special sensor pen must be used. There is a problem that the input panel is complicated and the circuit configuration and signal processing are complicated and expensive.

Recently, miniaturization of electronic devices has been promoted due to the development of semiconductor technology, but miniaturization of information input devices is the biggest obstacle.

Therefore, the conventional portable electronic device such as an electronic handbook or electronic dictionary adopts a structure in which the first plate and the second plate are hinged by installing a key input device on the first plate and a display device on the second plate. In other words, two plates are required and a complicated connection structure is inevitably required for signal connection between circuit devices installed on the two hinged plates, which increases cost and increases volume and weight. there was.

An object of the present invention is to provide a light, simple and low-cost information input device to solve such problems of the prior art.

Another object of the present invention is to provide a portable electronic organizer using the information input device and method.

The apparatus of the present invention for achieving the above object is a key input unit in which the M * N size key input area is arranged in the form of a P * Q matrix: N * Q Y line upper electrodes and M * P X line lower electrodes A contact type two-dimensional coordinate input unit positioned on a rear surface of the key input unit such that corresponding X and Y electrodes are contacted by pressure applied to a specific portion of the key input unit; A scan address signal is applied to the N * Q Y-line upper electrodes and a key data signal output from the M * P X-line lower electrodes is input. In the key input mode, M * is located below the key input region. Even if at least one of the N electrodes is touched, it is recognized as the same key input, and in the handwritten character and figure input mode, the contact position of each of the N * Q Y line upper electrodes and the M * P X line lower electrodes is two-dimensional coordinates. It is characterized by having a system control unit to recognize as an input. Here, M, N, P, and Q are positive integers.

The apparatus may further include a display unit for displaying a key input or a handwritten character and figure input recognized by the system controller.

The two-dimensional coordinate input unit has an upper base sheet interviewed on the rear surface of the key input unit, a N * Q Y-line upper electrodes printed on the upper base sheet, and a lower surface having an upper surface facing the rear surface of the upper base sheet. An insulation interposed between the base sheet and the upper base sheet and the lower base sheet so that the M * P X-line lower electrodes printed on the upper surface of the lower base sheet and the upper electrodes and the lower electrodes maintain a predetermined distance. A spacer is provided.

The upper base sheet is provided with an upper electrode connecting terminal portion integrally formed with the upper electrode and a lower electrode connecting terminal portion that is interviewed with one end of the lower electrodes, respectively.

In the modified embodiment of the present invention, the size of each key input area is M * N, the handwritten character and figure input / mixed key input area of (N * Q) * (M * P) and the periphery of M * 1 and N * 1. A (P + 1) * (Q + 1) key input section divided into a key input region, N * Q Y line upper electrodes having a pitch of 1 / N, and one having a pitch greater than 1 / N and less than 1 It is located on the back of the key input unit having a Y-line upper electrode and a M * P X-line lower electrodes having a pitch of 1 / M and one X-line lower electrode having a pitch greater than 1 / M less than 1 A scan address signal is applied to the contact-type two-dimensional coordinate input unit where the corresponding X and Y electrodes are contacted by the pressure applied to a specific portion of the key input unit, and the (N * Q) +1 Y-line upper electrodes are applied. By inputting key data signals outputted from the (M * P) X-line lower electrodes, in the key input mode, M * N size key input zero Even if at least one or more of the XY electrodes located under the contact is recognized as a single key input, in the handwritten character and figure input mode, the handwritten character and figure input combined key input area of (M * P) * (N * Q) And a system control unit for recognizing the contact position of each of the lower N * Q Y-line upper electrodes and the (M * P) -1 X-line lower electrodes as a two-dimensional coordinate input.

According to another aspect of the present invention, there is provided a portable electronic organizer, comprising: a key input unit having a key input area and a tablet area which combines handwritten characters, graphic inputs, and key inputs; And a liquid crystal display unit for recognizing handwritten characters and figure data and outputting the recognition result as display data, and a liquid crystal display unit for displaying the display data of the system control unit in one box.

Referring to FIG. 1, the information input apparatus according to the present invention has the size of each unit key input area is M * N (where M = 4 and N = 3 are the number of X electrodes and Y electrodes under the unit key input area). Handwritten character and figure input combined key input of (M * P) * (N * Q) (where P = 4, Q = 4 means the number of rows and columns of the key matrix) 5 * 5 key input unit 100, which is a matrix divided into a region 110 and peripheral key input regions 120 of 1 * 3 and 4 * 1, and 3 * 4 Y-line upper electrodes having a pitch of 1/3 (210) and (4 * 4) -1 X-line lower electrodes 240 and 1 having a pitch of greater than 1/3 and smaller than 1 and one Y-line upper electrode 220 and 1/4 An X-line lower electrode 230 having a pitch greater than / 4 and smaller than 1 and positioned at the rear surface of the key input unit 100 and corresponding to X by a pressure applied to a specific portion of the key input unit 100; Contact type with Y electrodes The 2D coordinate input unit 200 and the 13 Y-line upper electrodes 210 and 220 apply a scan address signal A0-A12 and are output from the 16 X-line lower electrodes 230 and 240. By inputting the data signals D0-D15, in the key input mode, the X electrodes 240a, 240b, 240c, 240d and the Y electrodes 210a, 210b, which are located below each unit key input area of 4 * 3 size, are input. At least one of 210c) is recognized as a single key input, and in the handwritten character and figure input mode, the (4 * 4) * (3 * 4) handwritten character and figure input combined key input area 110 is lowered. It includes a system control unit 300 for recognizing the contact position of each of the 3 * 4 Y line upper electrodes 210 and (4 * 4)-1 X line lower electrodes 240 of the two-dimensional coordinate input. . Reference numeral 400 denotes a liquid crystal display and 500 denotes a key input buffer.

2 and 3, the two-dimensional coordinate input unit 200 is printed on the upper base sheet 250 and the upper base sheet 250 that are interviewed on the rear surface of the key input unit 100. Y-line upper electrodes 210 and 220, a lower base sheet 260 having an upper surface facing the rear surface of the upper base sheet 250, and 16 printed on upper surfaces of the lower base sheet 260. The upper base sheet 250 and the lower base sheet 260 such that the X-line lower electrodes 230 and 240, the upper electrodes 210 and 220, and the lower electrodes 230 and 240 maintain a predetermined distance. An insulating spacer 290 is interposed therebetween. The upper base sheet 250 has an upper electrode connection terminal portion 270 integrally formed with the upper electrodes 210 and 220 and a lower electrode connection terminal portion that is interviewed with one end of the lower electrodes 230 and 240, respectively. 280 is formed.

4 is a perspective view of a portable electronic organizer using the information input device according to the present invention. The electronic organizer according to the present invention includes a key input unit (100) having a key input area (120), which is an information input device as described above, a tablet area (110) which combines handwritten characters, graphics input, and key input, and 32 row *. The 50 column liquid crystal display unit 400 and the function key unit 700 are integrally provided in the box. LCD display unit 400 displays 4 × 2 Korean input with 12 dots × 16 lines as the basic display unit and 8 × 2 and 8 × 4 numeric input displays with 6 dots × 8 line as the basic display unit. Icons such as battery low, pen mode, key mode, up, down, left and right directions, office phone, home phone can be displayed.

The function key unit 700 is a phone key (712) for the phone number and business card management mode, a memo key 714 for the notepad mode for inputting letters into the pen 600, local / world / alarm / appointment / anniversary, etc. Clock key 716 for time setting mode, calculator key 718 for calculator mode, information key 720 for setting of personal information and living information, Chinese character key 722 for common kanji solution mode, Includes operation on key 724, operation off key 726, left / right arrow keys 728 and 730 for table of contents / functional unit / cursor left and right movement, search registration, up and down arrow keys 732,734 for page unit / cursor up and down, etc. do.

As a key of the key input unit 100, an input key for storing and confirming a registration, a deletion key for deleting a current character in a search state where the cursor is not visible on the screen, and a deletion key for deleting a registration, adding a registration Insert key for insert, modify key for modifying the registration while showing the cursor on the screen, find key for finding the name by number, retract key to delete the left character and move the cursor to the left, and insert the cursor to the right There are keys for working status such as blank key to move to and peripheral keys such as AM / PM key, 1224 key, alarm key and quarter note key, and keys for calculation and numeric input.

Referring to FIG. 5, the system control unit 300 of the information input apparatus according to the present invention performs a kisscan interrupt routine for information input. Such an interrupt routine is performed through a periodic scan at 32 Hz intervals by a timer interrupt of the system controller 300. Here, the periodic scan means the scan address signals A0-A12 are (0111,1111,1111,1)-(1011,1111,1111,1)-(1101,1111,1111,1)-----(1111 (1111,1111,0) in order to scan 13 Y-line upper electrodes.

The interrupt routine reads the key input data D0-D15 according to the scan address signals A0-A12 (step 10), checks whether there is touched key input data among the read key input data (step 12). If there is no contacted key input data, that is, D0-D15 = 111111111111, the next scan address is designated (step 14), the end of scan is checked (step 16), and the steps 10 to 16 are repeated until the end is completed. Return on exit. Here, the key input data is all 1 when there is no key input, and only the corresponding bit is 0 when there is a key input.

If there is key input data contacted by the pressed part in step 12, it is checked whether it is the same as the code recognized by the previous key input (step 18) and returns if it is the same; if the code is not the same, the handwritten character and figure input mode It checks whether the flag is set (step 20) and returns if it is set. In this case, as shown in FIG. 8, the unit key input area includes 3Y electrodes * 4X electrodes, so that four consecutive points can be the same key input. If it is not set in step 20, the old code value of the key input data is converted into a new code value and returned after the code conversion result is stored in the key buffer (step 22).

In the present invention, the key input state and the pen input state are automatically determined according to the flow of the main program of the system control unit. The pen input state, that is, the handwritten character and figure input state, in the embodiment is different from the name input standby state among the telephone functions. There are pen input states in note input state, memo contents input state in memo function, appointment and anniversary setting state in appointment function and personal information function. Referring to FIG. 6, the key buffer is checked (step 30), and if there is key data returned, the key data is read (step 32). It is checked whether the read key data is 1111, 1111, 1111, or 1111 (step 34) or the coordinates according to the key data are calculated (step 36). The display dot value by the coordinate calculation is written into the display buffer (step 38), and the pen input flag is set (step 40). Here, the display dot value is a value stored in the display buffer by converting the coordinate value corresponding to the key data value at that time according to the pen input by the bitmap method as shown in FIG. 7 and the stored information is the liquid crystal display. Injuries will be indicated. The reference time is then read (step 42) and fed back to step 30. In step 34, if the key data values are all 1, the pen input flag is checked (step 44) .If not, the pen input flag status is checked (step 44) .If not, it is fed back to step 30, if it is set, the time is read (step 48). In step 50, the pen input flag is cleared (step 50) and returns.

9 shows a modified embodiment of the key input unit 100 shown in FIG. 4 with reference to (a) and (b). 9 illustrates a key input dedicated area 910 which serves the same role as the key input area 120 of the key input part 100 of FIG. 4, and a tablet area 110 of the key input part 100 of FIG. 4. A write input dedicated area 920 is shown. Here, the write input dedicated area 920 may be configured to allow input of Korean, English, symbols, etc., in a magnetic code, which is illustrated in FIG. 9 (a). FIG. 9 (b) shows a form in which the write input dedicated area 920 is substantially inputted with English, numbers, Korean, Chinese, Japanese, and figures by the pen 600 shown in FIG. In addition, the write input dedicated area 920 is configured to move the cursor in a predetermined number of directions, for example, 8 directions, according to the moving direction of the contact point to perform a function similar to a conventional mouse input device (not shown). can do.

As shown in FIGS. 1 through 3, the configuration of FIG. 9 is similar to that shown in FIGS. 1 through 3, and p * q (p≥P, q≥) of the key input area of m * n (m≤M, n≤N) size. The key input unit 100 arranged in a matrix form of Q): the key input unit 100 having n * q Y-line upper electrodes and m * p X-line lower electrodes and located on the rear surface of the key input unit 100. It is configured to have a contact type two-dimensional coordinate input unit 200 in contact with the corresponding X and Y electrodes by the pressure applied to a specific portion of the predetermined portion of the key input unit 100, that is (n * s) * ( The m * r) (sq, rp) area may be a write input dedicated area 920, and the remaining part may be a key input dedicated area 910. FIG.

Of course, also in the configuration of FIG. 9, as shown in FIG. 1, a scan address signal is applied to the n * q Y-line upper electrodes 210 and 220 and the m * p X-line lower electrodes By inputting the key data signal output from the 230 and 240, in the key input mode, even if at least one or more of the m * n electrodes located below the key input dedicated region 910 is recognized as a single key input, handwritten characters In the figure input mode, the contact positions of the n * s Y-line upper electrodes 210 and 220 and the m * r X-line lower electrodes 230 and 240 positioned below the write input dedicated region 920 are two-dimensional coordinate inputs. Predetermined information input can be performed. In this case, the system controller 300 shown in FIG. 1 can recognize and control the key input and the two-dimensional coordinate input.

As described above, since the information input device of the present invention can use both the key input area and the pen input area, the area occupied by the key input part can be minimized, thereby miniaturizing it. The pen input makes it easy to input English, numbers, Korean, Chinese characters, Japanese and figures, so that you can enter information more freely than the key input method, and make the information input speed faster. In addition, compared to a key input for inputting information by pressing a small keypad, a user inputs by handwriting using a pen, thereby preventing mis-input and allowing a variety of information to be input. In addition, the present invention can be manufactured very inexpensively by adopting a coordinate input structure at the time of contact with a simple structure without using expensive two-dimensional coordinate input devices such as piezoelectric, electrostatic, or acoustic wave or optical methods.

As described above, in the case of the portable electronic organizer using the information input device according to the present invention, since it can be configured as a single box, a complicated hinge structure can be eliminated as compared to a key input method using a conventional pair of boxes. Can be drastically reduced, making it more portable and cost effective. That is, the portable electronic organizer using the information input device according to the present invention can achieve a very small size, light weight, and ultra low cost.

The present invention is not limited to the case of the electronic organizer, it is applicable to any electronic device that requires an interface between the electronic device and the person, and those skilled in the art within the spirit and scope of the invention described in the claims below Note that many variations are possible.

Claims (5)

Key input section in which M * N (MN is a positive integer) sized key input region arranged in a P * Q matrix form: N * Q (Q is a positive integer), Y line upper electrodes and M * P (P A lower base sheet having a positive integer) X-line lower electrodes and positioned on a rear surface of the key input unit and interviewed with a rear surface of the key input unit, a lower base sheet having an upper surface opposite to a rear surface of the upper base sheet; An insulating spacer interposed between the upper base sheet and the lower base sheet so that the upper electrodes and the lower electrodes maintain a predetermined distance, and the N * Q Y-line upper electrodes are printed on the upper base sheet, and M P-type X-ray lower electrodes are printed on an upper surface of the lower base sheet, and contact two-dimensional coordinate input units in which corresponding X and Y electrodes are contacted by pressure applied to a specific portion of the input unit; A scan address signal is applied to the N * Q Y-line upper electrodes and a key data signal output from the M * P X-line lower electrodes is input. In the key input mode, M * is located below the key input region. Even if at least one of the N electrodes is in contact, the contact two-dimensional coordinate input unit recognizes the key input, and in the handwritten character and figure input mode, each N * Q Y line upper electrode and M * P X line lower electrode Hand-written character and figure input combined key input device comprising a system control unit for recognizing the contact position of the contact by the contact type two-dimensional coordinate input unit by handwritten character and figure input. The apparatus of claim 1, wherein the apparatus further comprises a liquid crystal display configured to display a key input or a handwritten character and a graphic input recognized by the system controller. The method of claim 1, wherein the upper base sheet is provided with a terminal portion for connecting the upper electrode formed at the same time as the upper electrode and a terminal portion for connecting the lower electrode to be interviewed with one end of the lower electrodes, respectively. Key input device. Key input areas of size M * N are arranged in matrix form of (N * Q) * (M * p) and in matrix form of M * 1 and 1 * N, respectively. A key input unit divided into peripheral peripheral key input areas and arranged in a matrix form of (P + 1) * (Q + 1); N * Q Y-line upper electrodes with pitches of 1 / N, one Y-line upper electrode with pitches greater than 1 / N and less than 1 and M * P X-line lower electrodes with pitches of 1 / M And an upper base sheet having an X-ray lower electrode having a pitch greater than 1 / M and having a pitch less than 1 and positioned on the rear surface of the key input unit and interviewed with the rear surface of the key input unit, and against the rear surface of the upper base sheet. A lower base sheet having an upper surface, and an insulating spacer interposed between the upper base sheet and the lower base sheet so that the upper electrodes and the lower electrodes have a predetermined distance, and the N * Q Y line upper electrodes Printed on the upper base sheet, and M * P X-line lower electrodes are printed on the upper surface of the lower base sheet and applied by a pressure applied to a specific portion of the key input unit. Yes X and Y electrodes are contact-type two-dimensional coordinate input section to be in contact; And a scan address signal is applied to the (N * Q) +1 Y-line upper electrodes and a key data signal output from the (M * p) X-line lower electrodes is input. Even if at least one of the M * N electrodes located below the N-size key input area is touched, the two-dimensional coordinate input unit recognizes the key input at the time of contact, and in the handwritten character and figure input mode, the (N * Q) The contact position of each of the N * Q Y-line upper electrodes and (M * P) -1 X-line lower electrodes below the handwriting character and figure input key input region of * (M * P) Hand-written character and figure input combined key input device comprising a system control unit for recognizing the handwritten character and figure input in the dimensional coordinate input unit. The key input area of size M * N (M, N is a positive integer) is a matrix of (Pp) * (Qq) (P≥p, Q≥q; P, Q, p, q is a positive integer) An arrayed key input unit; An upper base sheet having N * Q Y-line upper electrodes and M * P X-line lower electrodes and positioned on a rear surface of the key input unit and interviewing the rear surface of the key input unit, and facing the rear surface of the upper base sheet; And a lower base sheet having an upper surface, and an insulating spacer interposed between the upper base sheet and the lower base sheet so as to maintain a predetermined distance between the upper electrodes and the lower electrodes, and the N * Q Y line upper electrodes Two-dimensional contact type printed on the upper base sheet, and the M * P X-line lower electrodes are printed on the upper surface of the lower base sheet so that corresponding X and Y electrodes are contacted by pressure applied to a specific portion of the input unit. Coordinate input unit; And N * q Y line upper electrodes among the N * Q Y line upper electrodes, and M * p X line lower electrodes among the M * P X line lower electrodes. * (N * q) dedicated handwritten character and figure input unit; A scan address signal is applied to the N * Q Y-line upper electrodes and a key data signal output from the M * P X-line lower electrodes is input. In the key input mode, the contact is located below the key input area. Even if at least one or more of the M * N electrodes of the two-dimensional coordinate input unit are in contact with each other, it is recognized as a key input, and in the handwritten character and figure input mode, the N * q Y-line upper electrodes and Handwritten character and figure input combined key input device comprising a system control unit for recognizing the contact position of the M * p X-line lower electrodes by handwritten character and figure input.